How a Group of Scaly, Legless Lizards Hit the Evolutionary Jackpot
More than 100 million years ago, the ancestors of the first snakes were small legless lizards that lived alongside other small, nondescript lizards in the shadow of the dinosaurs.
Then, in a burst of innovation in form and function, the ancestors of snakes evolved legless bodies that could slither across the ground, highly sophisticated chemical detection systems to find and track prey, and flexible skulls that enabled them to swallow large animals.
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